Yankees May Deal Aroldis Chapman for a Top Prospect

After weeks of deliberating over whether to keep closer Aroldis Chapman, the Yankees appeared far along in discussions on Sunday night to trade him for prospects.

The Yankees told one of several teams in talks about Chapman that they were considering an offer involving a top-50 prospect, according to a person in baseball.

The Chicago Cubs, who are among the teams pursuing Chapman, scratched one of their top prospects, the 19-year-old shortstop Gleyber Torres, from a game on Sunday for Class A Myrtle Beach. Torres, who is from Venezuela, is considered an excellent defensive shortstop who has a chance to be a good major league hitter. He is batting .275 with nine home runs and 47 R.B.I. for Myrtle Beach.

The Cubs are among a number of playoff contenders seeking help in the bullpen, along with Cleveland, Washington, San Francisco, Texas and others, making it an opportune time for the Yankees to put Chapman on the market.

Chapman, 28, with a fastball that repeatedly registered at 105 miles per hour on Saturday, is one of baseball’s best closers. He is 3-0 with 20 saves and a 2.01 E.R.A. He struck out 44 batters in 31⅓ innings after returning from a 30-game suspension for domestic violence.